问题 解答题

计算比赛

(78+22)×4

=

=

(24+36)×8

=

=

75×2+45

=

=

3×40+56

=

=

4×203+500

=

=

456×4-456

=

=

答案

(78+22)×4

=100×4

=400;

(24+36)×8

=60×8

=480;

75×2+45

=150+45

=195;

3×40+56

=120+56

=176;

4×203+500

=812+500

=1312;

456×4-456

=1824-456

=1368.

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